Weather strip for metal sash windows



Patented Nov. 16, 1937 WEATHER STRIP FOR METAL SASH WINDOWS Frank L. Carr, Jr., Maplewood, Pa.

Application March 30,

2y Claims.

This invention relates to weather strips for metallic window frames and sashes, and has for the primary object the provision of a simple, durable and efficient vdevice of this character which may be readily installed to all abutment flanges of a metallic window frame without the use of fasteners, cement and the like and will maintain its position against accidental displacement and is readily compressible to permit shutting of the sash frame and will completely close all spaces which occur between the abutment flanges of the window frame and the sash and thereby seal and prevent the passing of air between the sash and the frame.

With these and other objects in View, this invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.V Y

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawing, in which Figure l is a fragmentary perspective View illustrating a window strip constructed in accord- 25 ance with my invention. Y

Figure 2 is a View similar to Figure 1, partly in section, showing the application of the strip to an abutment flange of a metallic window frame.

Figure 3 is a fragmentary sectional View show- 30 ing the weather strip in use and applied to a Window frame and engaged by a sash frame.

Figure 4 is a view similar to- Figure 3 illustrating clearly how the strip will compress.

Figure 5 is a fragmentary perspective view 35 showing diagonal cuts made in the strip for the assembling thereof to a Window frame.

Figure 6 is a fragmentary perspective View, partly in section, showing the corrugated or compressible face of the strip.

40 Referring in detail to the drawing, the numeral I indicates a fragmentary portion of a metallic Window sash and 2 a fragmentary portion of a metallic window frame. The sash frame and window frame are of angle iron construction presenting abutment flanges 3 and 4. Window and sash frames of this character frequently warp or expand and contract due to variances in temperatures so that when the sash frame. is moved into closed position spaces occur between the latter and the window frame and heretofore weather strips now in use have been found to be impractical for sealing these spaces for various reasons.

In order to providean effective seal I have devised a weather strip 5 constructed from rubber or any other material suitable for the purpose 1936, Serial No. 71,708

and includes a bight portion 6 and parallel legs l and 8. The bight portion and leg portions cooperate in forming a channel for the reception of the abutment flanges 4 of a metallic window frame 2. The leg portion Y l is constructed to converge towards the leg portion 8 and is capable 'of expansion or flexation so as to adapt the strip to an abutment flange whereby the natural tend' ency of the leg portion to contract will bring about a firm grip of the strip on the flange. The leg portion 'l where the latter merges with the bight portion 6 is cut away, as shown at 9, to form an air space l0 when the strip is adapted to an abutment ange. This air space when the strip is adapted to the abutment flange becomes sealed and aids the leg portion l in gripping the abutment flange and thereby effectively secures the strip to the window frame against displacement.

The bight portion 6 upon the outer face thereof slopes towards the leg portion 8 to form a drain surface ll so that condensation on the window falling upon the strip will readily drainy therefrom. A series of longitudinally extending corrugations l2 are formed on the outer face of the leg portion Y 'l and one side of the bight portion to provide a yieldable or cushioning face to the strip to be engaged by the sash frame. The face last referred to will readily yield under excessive pressure so that spa-ces occurring between the sash frame and the window frame when said sash frame is Closed will be effectively sealed still permitting the sash frame to move in complete window closing position.

In adapting a strip of the character described to a sash frame or the abutment flanges thereof it is preferable that the ends from joints in the strip be cut diagonally, as shown in Figure 5. Also a strip of this character may be readily adaptable to window frames wherein the widths of abutment flanges vary as the strip may be manufactured in a size to take care of the window frame having abutment anges of the greatest Width so that when adapted to abutment flanges of iwidths less than the maximum the leg portions may be trimmed or cut off.

Having described the invention, I claim:

1. A weather strip comprising a body of yieldable material having a channel formation for receiving abutment flanges of Window frames', and a plurality of closely spaced corrugations provided on one side of said body and extending longitudinally thereof,v said corrugations adapted to be engaged selectively by the sash frame whereby the raised portion of the corrugaton engaged will be depressed to receive the sash frame. at the point of contact and the adjacent raised portions of the corrugated face of the body Will be enlarged and overlap. opposite side edges of the sash frame.

2. A Weather strip comprising a body of yieldable material having a channel formation providing a bight portion and leg portions for receiving abutment flanges of Window frames, one of said leg portions converging towards the other leg portion to cooperate therewith in gripping abutment flanges of Window frames, a plurality of closely spaced corrugations provided on the converging leg portion and extending longitudinally an air chamber when adapted to anabutment 10 iiange oi a Window frame.

FRANK L. CARR, JR. 

